20444423032 has 64 divisors (see below), whose sum is σ = 42280392960. Its totient is φ = 9190444800.

The previous prime is 20444423017. The next prime is 20444423033. The reversal of 20444423032 is 23032444402.

It is a happy number.

It is a super-2 number, since 2×20444423032² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444423033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13423023 + ... + 13424545.

It is an arithmetic number, because the mean of its divisors is an integer number (660631140).

Almost surely, 2^20444423032 is an apocalyptic number.

20444423032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20444423032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21140196480).

20444423032 is an abundant number, since it is smaller than the sum of its proper divisors (21835969928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20444423032 is a wasteful number, since it uses less digits than its factorization.

20444423032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124 (or 3120 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20444423032 its reverse (23032444402), we get a palindrome (43476867434).

The spelling of 20444423032 in words is "twenty billion, four hundred forty-four million, four hundred twenty-three thousand, thirty-two".